Common side effects of this medication do include the following; Stomach upset, nausea/vomiting, bloating, breast tenderness, headache, or weight. It is best to speak with your doctor promptly if you are experiencing any of these side effects.
However there are some more serious side effects, and if you have been experiencing them you should speak with your doctor right away. They are as follows; lumps in the breast, mental/mood changes (such as depression, memory loss), persistent nausea/vomiting, severe stomach/abdominal pain, yellowing eyes/skin, dark urine, swelling hands/ankles/feet, increased thirst/urination, unusual vaginal bleeding (such as spotting, sudden heavy bleeding).
Also this medication may rarely cause some serious issues blood clots, such as; heart attacks, strokes, deep vein thrombosis, pulmonary embolism. Please seek medical attention right away if are experiencing any of these side effects; chest/jaw/left arm pain, confusion, coughing up blood, pain/swelling/warmth in the groin/calf, slurred speech, sudden dizziness/fainting, sudden/severe headache, sudden vision changes (such as partial/complete blindness), tingling/weakness/numbness in the arms/legs, trouble breathing, unusual sweating, weakness on one side of the body.
A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.